FIG. 1 is a perspective view of a foldable bicycle frame showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view showing the foldable bicycle frame of FIG. 1 being assembled on a foldable bicycle;
FIG. 9 is a perspective view of a foldable bicycle frame showing another embodiment of my design;
FIG. 10 is a front elevational view thereof;
FIG. 11 is a rear elevational view thereof;
FIG. 12 is a left side view thereof;
FIG. 13 is a right side view thereof;
FIG. 14 is a top plan view thereof;
FIG. 15 is a bottom plan view thereof; and,
FIG. 16 is a perspective view showing the foldable bicycle frame of FIG. 9 being assembled on a foldable bicycle.
The broken line showing of the foldable bicycle in FIGS. 8 and 16 is for the purpose of illustrating environmental structure only and forms no part of the claimed design.